package ooday01;

public class ConsDemo {
    public static void main(String[] args) {
        Student zs=new Student();
        Student ls=new Student("李四",18);
        Student ww=new Student("王五",18,"jsd2302","002");
        zs.sayHi();
        ls.sayHi();
        ww.sayHi();
        Student ml=new Student();
        Student zq=new Student("赵七",25,"jsd2302","003");
        ml.sayHi();
        zq.sayHi();
    }
}
